Digital
Logic Design
Automatic
Doorbell Using Object detection
Basic Principle:
We all have a
doorbell at our homes. When a visitor comes to our house, he searches for the
doorbell switch and then rings it to let us know his presence. If the who came
to our house cannot find the doorbell or else if the person is so short that he
cannot reach the doorbell, what can be done? If
we install this automatic doorbell using object detection circuit, the circuit
will automatically sense the presence of the person and it rings the doorbell.
Components Used:
·
Transistors
·
Led
·
555
Timer
·
LM 324
·
Potentiometer
·
Ultrasonic
Sensor ( Transmitter and Receiver )
·
Capacitors
·
Battery
Working:
This circuit operates using a pair of ultrasonic
transmitter and receiver modules which are used to detect the person and then
if the person is detected, the doorbell is automatically turned ON when the
person is in-front of the door.
Circuit Diagram:
Applications of this
Project:
The
Application of this project is that if a person is standing near the door and
he is not able to ring the bell then this circuit automatically rings the
doorbell if the person is detected.
The
ultrasonic sensors used in this project are capable of detecting objects.
This
idea can also be used in Automatic Car
Parking System that is when an object is detected near the car bumper than
it generates an automatic bell that the driver has to stop the car.
The
range of object detection can be changed using the potentiometer. The other technique
to increase the range of object detection is using the higher range ultrasonic
sensor.
Written by Unknown
We are Creative Blogger Theme Wavers which provides user friendly, effective and easy to use themes. Each support has free and providing HD support screen casting.
0 comments:
Post a Comment